Trolley bag

ABSTRACT

The present invention provides an improved trolley bag comprising a primary bag unit, a left bag unit, a right bag unit and collapsible bag units; wherein the collapsible bag units are provided between the primary bag unit and the left bag unit as well as between the primary bag unit and the right bag unit respectively in order to form one single trolley bag and such that the trolley bag is of a collapsible function for extending and collapsing thereof. As a result, the improved trolley bag of the present invention can be used for carrying conventional items under a collapsed configuration and can be advantageously used for carrying elongated items including such as golf clubs under an extended configuration. Accordingly, the practical applications and usefulness of the improved trolley bag of the present invention are increased and enhanced.

TECHNICAL FIELD OF THE INVENTION

The present invention is related to a bag with an improved structure for carrying cargo and articles, in particular, to an improved trolley bag with wheels having a collapsible structure for extension or retraction thereof.

DESCRIPTION OF THE PRIOR ART

Currently, the shapes of conventional trolley bags are often of the configurations of fixed lengths and sizes. For the trolley bags designed for carrying travelling gear and luggage, the length of such trolley bags are often longer in length than conventional luggage bags or suitcases; despite their longer length than ordinary luggage bags and suitcases, they are, however, not long enough for carrying special items such as golf equipment that require a much longer luggage bags. As a result, in order to accommodate different length of carrying items and luggage, more than luggage bags in different lengths are required, which is inconvenient and non-economic to users. In addition, for a single trolley bag and its functions, there is a need for an improvement to overcome the aforementioned shortcomings and to enhance the practical usefulness as well as applications of the trolley bag.

SUMMARY OF THE INVENTION

In view of the above, an objective of the present invention is to provide an improved trolley bag capable of overcoming the aforementioned drawbacks of known trolley bags that are lack of functionalities, impractical in various applications and non-economic to users.

To achieve the aforementioned objective, the present invention provides an improved trolley bag comprising a primary bag unit, a left bag unit, a right bag unit and collapsible bag units; wherein the collapsible bag units are provided between the primary bag unit and the left bag unit as well as between the primary bag unit and the right bag unit respectively in order to form the improved trolley bag integrally as one single bag and such that the improved trolley bag is of a collapsible function for extending and collapsing thereof. In addition, a top surface of the overall trolley bag comprises a zipper strap as part of a bag opening of the trolley bag. The left and right bag units further comprise a locking ring provided thereon respectively and the primary bag unit further comprises a locking buckle for correspondingly buckling onto the locking rings whereby when the improved trolley bag is collapsed with a decreased overall length, the left bag unit, the right bag unit and the primary bag unit are held to be attached to each other firmly. Furthermore, the primary bag unit comprises a lifting handle, the left bag unit comprises a pulling handle and a bottom of the right bag unit comprises wheels. With the aforementioned structure, the improved trolley bag of the present invention is of a collapsible function such that when it is at a collapsed configuration, it can be used for carrying and storing conventional items; whereas when it is at an extended configuration with the left and right extendable bag units being extended to increase the overall length of the trolley bag, it can be used for carrying and storing elongated items including such as golf clubs. As a result, the practical applications and usefulness of the trolley bag of the present invention are improved and enhanced.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a top view of the improved trolley bag of the present invention;

FIG. 2 is a front view of the improved trolley bag of the present invention;

FIG. 3 is a bottom view of the improved trolley bag of the present invention;

FIG. 4 is an illustration showing an extension operation of the improved trolley bag of the present invention;

FIG. 5 is an illustration showing another embodiment of the improved trolley bag of the present invention in a collapsed configuration; and

FIG. 6 is an illustration showing another embodiment of the improved trolley bag of the present invention in an extended configuration.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

FIG. 1 to FIG. 3 show a preferred embodiment of an improved trolley bag of the present invention 1. The improved trolley bag 1 comprises a primary bag unit 10, a left bag unit 20, a right bag unit 30 and collapsible bag units 40. The collapsible bag units are provided between the primary bag unit 10 and the left bag 20 unit as well as between the primary bag unit 10 and the right bag unit 30 respectively in order to form the improved trolley bag 1 integrally as one single bag. A top surface of the overall trolley bag 1 comprises a zipper strap 70 as part of a bag opening of the trolley bag 1. A top surface of the left bag unit 20 and a bottom surface of the right bag unit 30 comprise locking rings 21 and 31 respectively and the primary bad unit 10 comprises locking buckles 11 for correspondingly buckling onto the locking rings whereby when the improved trolley bag 1 is collapsed with a decreased overall length, the left bag unit 20, the right bag unit 30 and the primary bag unit 10 are held to be attached to each other firmly. The primary bag unit 10 comprises a lifting handle 50, the left bag unit 20 comprises a pulling handle 60 and the right bag unit 30 comprises wheels 80 on a bottom thereof. In addition, the primary bag unit 10 further comprises a supporting platform 12 provided therein, and the supporting platform 12 is attached an extendable frame 90 with extendable left and right ends.

FIG. 4 is an illustration showing the operations of collapse and extension of the improved trolley bag 1 of the present invention. Under the collapsed state of the trolley bag 1, the locking rings 21, 31 on the left bag unit 20 and the right bag unit 30 are firmly buckled onto the locking buckle 11 of the primary bag unit 10. To extend the trolley bag 1, the buckling between the locking rings 21, 31 and the locking buckle 11 is released and disengaged first, followed by pulling the left and right bag units 20, 30 at opposite directions of such as right and left directions such that the collapsible bag units 40 are extended due to the pulling and such that the overall length of the trolley bag 1 is increased. Finally, the extendable left and right ends of the extendable frame 90 inside the primary bag unit 10 are pulled to extend outward in order to provide structural supports for the collapsible bag units 40 and to enhance the structural strength thereof such that the extended trolley bag 1 can be lifted with the lifting handle 50 provided on the primary bag unit 10 without bending or folding of the bag units. Alternatively, the pulling handle 60 provided on the left bag unit 20 can also be used in conjunction with the wheels 80 provided at the bottom of the right bag unit 30 in order to allow the trolley bag 1 to be carried and moved with ease. With the aforementioned structure, the improved trolley bag 1 of the present invention is of a collapsible function such that when it is at a collapsed configuration, it can be used for carrying and storing conventional items; whereas when it is at an extended configuration with the left and right extendable bag units being extended to increase the overall length of the trolley bag, it can be used for carrying and storing elongated items including such as golf clubs. As a result, the practical applications and usefulness of the trolley bag of the present invention are improved and enhanced.

FIG. 5 and FIG. 6 show another preferred embodiment of an improved trolley bag of the present invention. The improved trolley bag 1 having a vertical form in a collapsed configuration comprises a primary bag unit 20, an upper board 20 a, a lower base 30 a and collapsible bag units 40. The collapsible bag units 40 are provided between the primary bag unit 10 and the upper board 20 a as well as between the primary bag unit 10 and the lower base 30 a respectively in order to form the improved trolley bag 1 integrally as one single bag. A top surface of the overall trolley bag 1 comprises a zipper strap 70 as part of a bag opening of the trolley bag 1. A top surface of the upper board 20 a and a bottom surface of the lower base 30 a comprise locking rings 21 and 31 respectively and the primary bad unit 10 comprises locking buckles 11 for correspondingly buckling onto the locking rings whereby when the improved trolley bag 1 is collapsed with a decreased overall length, the upper board 20 a, the lower base 30 a and the primary bag unit 10 are held to be attached to each other firmly. The primary bag unit 10 comprises a lifting handle 50, the upper board 20 a comprises a pulling handle 60 and the lower base 30 a comprises wheels 80 on a bottom thereof. In addition, the primary bag unit 10 further comprises a supporting platform 12 provided therein, and the supporting platform 12 is attached an extendable frame 90 with extendable upper and lower ends. With the aforementioned structure, the improved trolley bag 1 of the present invention is of a collapsible function such that when it is at a collapsed configuration, it can be used for carrying and storing conventional items; whereas when it is at an extended configuration with the left and right extendable bag units being extended to increase the overall length of the trolley bag, it can be used for carrying and storing elongated items including such as golf clubs. As a result, the practical applications and usefulness of the trolley bag of the present invention are improved and enhanced. 

1. An improved trolley bag, comprising: a primary bag unit, a left bag unit, a right bag unit and collapsible bag units; wherein said collapsible bag units are provided between said primary bag unit and said left bag unit as well as between said primary bag unit and said right bag unit respectively in order to form said improved trolley bag integrally as one single bag and such that said improved trolley bag is of a collapsible function for extending and collapsing thereof.
 2. The improved trolley bag according to claim 1, wherein a top surface of said left bag unit and a bottom surface of said right bag unit comprise a locking ring respectively and said primary bad unit comprises locking buckles for correspondingly buckling onto said locking rings whereby when said improved trolley bag is collapsed with a decreased overall length, said left bag unit, said right bag unit and said primary bag unit are held to be attached to each other firmly.
 3. The improved trolley bag according to claim 1, wherein said primary bad unit comprises a supporting platform provided therein, and said supporting platform is attached an extendable frame with extendable left and right ends.
 4. An improved trolley bag, having a vertical form in a collapsed configuration, comprising: a primary bag unit, an upper board, a lower base and collapsible bag units; wherein said collapsible bag units are provided between said primary bag unit and said upper board as well as between said primary bag unit and said lower base respectively in order to form said improved trolley bag integrally as one single bag and such that said improved trolley bag is of a collapsible function for extending and collapsing thereof.
 5. The improved trolley bag according to claim 4, wherein a top surface of said lower base and a bottom surface of said upper board comprise a locking ring respectively and said primary bad unit comprises locking buckles for correspondingly buckling onto said locking rings whereby when said improved trolley bag is collapsed with a decreased overall length, said lower base, said upper board and said primary bag unit are held to be attached to each other firmly.
 6. The improved trolley bag according to claim 4, wherein said primary bad unit comprises a supporting platform provided therein, and said supporting platform is attached an extendable frame with extendable upper and lower ends. 